Overview. Complex carbohydrates are made up of sugar molecules that are strung together in long, complex chains. Complex carbohydrates are found in foods such as peas, beans, whole grains, and vegetables.
Confidence votes 11.2K. Taught College level A&P for 27 years. The lens in the human eye is a convex lens, but it is flexible and when it is acted on by the ciliary muscle around it, the lens can be flattened to change the focus, or, when the muscle is relaxed, the lens can assume a more spherical shape.
In optical astronomy there are three basic types of telescopes; the refractor, the catadioptric and the reflector. The refractor telescope receives light through the objective lens (the large lens closest to the subject being viewed) and sends it to the eyepiece for magnification.